Java GregorianCalendar computeTime（）方法与示例

GregorianCalendar类computeTime()方法 (GregorianCalendar Class computeTime() method)

• computeTime() method is available in java.util package.

  java.util包中提供了computeTime()方法 。

• computeTime() method is used to compute the calendar fields to the calendar time value.

  computeTime()方法用于将日历字段计算为日历时间值。

• computeTime() method is a non-static method, it is accessible with class object only and if we try to access the method with class name then we will get an error.

  computeTime()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• computeTime() method does not throw an exception at the time of computing time of this calendar fields.

  在此日历字段的计算时间， computeTime()方法不会引发异常。

Syntax:

句法：

protected void computeTime();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of this method is void, it returns nothing.

此方法的返回类型为void ，不返回任何内容。

Example:

例：

// Java program to demonstrate the example // of void computeTime() method of // GregorianCalendar import java.util.*;public class ComputeTimeOfGregorianCalendar extends GregorianCalendar {public static void main(String[] args) {// Instantiating a ComputeTimeOfGregorianCalendar objectComputeTimeOfGregorianCalendar ca = new ComputeTimeOfGregorianCalendar();// Display current calendarSystem.out.println("ca: " + ca.getTime());// By using clear(int fi) method to set the// field unsetca.clear(GregorianCalendar.MONTH);// Display calendarSystem.out.println("ca.clear(GregorianCalendar.MONTH): " + ca.getTime());// By using set() method is to set a month //and invoke computeTime()ca.set(GregorianCalendar.MONTH, 6);ca.computeTime();// Display calendarSystem.out.println("ca.set(GregorianCalendar.MONTH,6): " + ca.getTime());} }

Output

输出量

ca: Sat Feb 15 07:26:06 GMT 2020 ca.clear(GregorianCalendar.MONTH): Wed Jan 15 07:26:06 GMT 2020 ca.set(GregorianCalendar.MONTH,6): Wed Jul 15 07:26:06 GMT 2020

翻译自: https://www.includehelp.com/java/gregoriancalendar-computetime-method-with-example.aspx

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